TalkTalk Group, which started life as part of Carphone Warehouse before demerging in 2010, has bought the Tesco broadband and fixed-line voice base from Tesco plc.

This gives it around 75,000 broadband customers and around 20,000 voice customers, which will be transferred to the TalkTalk network.

Time for another podcast presented by Iain Graham, James Rosewell and Mark Bridge. They begin this week's programme by talking about the latest enterprise-friendly developments from BlackBerry.

Next comes a new survey from Ofcom about the UK's 4G data speeds, followed by news about TalkTalk's MVNO deal with Telefonica, the growth of WiFi in the home and a report from AVG about social media sapping smartphone performance.

Telecoms business TalkTalk has set up a  new multi-year MVNO agreement with Telefónica UK, the company behind O2.

TalkTalk’s current virtual network agreement is with Vodafone.

Ofcom has published its latest quarterly report, which shows details of the amount of complaints it’s received about major telecoms and pay TV providers.

This new report covers the period from July to September 2013.

The UK government says it’s worked with telecoms companies to reduce the risk of consumers receiving unexpectedly high bills if their phone is stolen.

Culture Secretary Maria Miller has announced a new agreement with EE, Three, Virgin Media and Vodafone to cap bills on a mobile phone that has been reported lost or stolen.

Mark Bridge writes:

The adage that “the customer is always right” has apparently been disproved by a recent survey of mobile phone users.

Mobile News reports that virtual networks Virgin Mobile and Tesco Mobile outperformed their network partners in a recent customer satisfaction survey carried out by research firm YouGov for price comparison website uSwitch.

Mark Bridge writes:

I knew I’d seen it before. Towards the end of last week I read about a study from the Department of Computer and Information Science at the University of Pennsylvania that said it was pretty easy to identify passwords from smudges on touchscreen mobile phones.

James Rosewell writes:

Yesterday I received the following text message from O2: “You’ve gone over your data allowance on your mobile. You need to cut down or get a bigger Bolt On to keep using the internet.” I thought this was strange as I’ve an unlimited data bolt on applied to my O2 UK contract so I decided to telephone O2 customer services to find out a little bit more. Here’s what happened.

This week's Carnival of the Mobilists – the best mobile blogging (and podcasting!) of the last seven days – is online at Tam Hanna's new TamsBada site. As always, you'll find a wide variety of mobile-related subjects and discussions.

Mark Bridge writes:

Supermarkets. You either love ‘em or hate ‘em. Actually, that’s not true. Most of us seem to be happy enough with a half-price bottle of wine but less convinced about globalisation and supplier relationships.

But none of that’s bothering me today. Instead, I’m troubled – as I have been for several months – by the TV commercial for Tesco’s prepay mobile phone tariff.

Iain Graham, James Rosewell and Mark Bridge return to review their mobile industry predictions from last year. Which mergers, partnerships and developments did they forecast correctly... and which didn’t work out as planned?

Later in the programme, the team anticipates some of the topics that will be hitting the headlines during 2016.

Mark Bridge learns about the mobile technology trends at Mobile World Congress 2015 by chatting to James Rosewell of 51Degrees, Dr Kevin Curran from the IEEE and Chris Millington of Doro.

They talk about wearable devices, wireless charging, mobile operating systems and much more... including some of their favourite products from the exhibition.

We're taking a look back at the biggest mobile industry news stories from February 2015, including allegations that the UK's security service tried to breach SIM card security by hacking into one of the world's biggest SIM producers.

We also talk about the planned BT and EE merger, the creation of two new UK virtual networks, some acquisitions in the mobile payment arena and a new Ubuntu smartphone.

In today's programme Mark Bridge talks to Chris Millington, who's Managing Director for Doro UK and Ireland.

They discuss the state of mobile retailing in the UK, the future of wearable devices and - as you might expect - smartphones for seniors.

We're back with a month of mobile industry news, including takeover talks and takeover rumours. O2 and Three are said to be discussing a merger... but is there any truth in the suggestions that BlackBerry could be up for grabs?

We also discuss Apple's record-breaking quarterly figures, the highlights of CES and the launch of Microsoft Windows 10, as well as saying farewell to the current version of Google Glass.